Jacquard mechanism



A. F SCHULER. JACOU ARD MECHANISM. APPHCATION FILED APR.'9, I918.

Patented June 21, 1921.

v g dahmflficzuze To all ham it may concern UNITED STATES" ADAM SCHULER, OF PHILADELPHIA, NSYLVANIAJ JACQUARD MECHANISM.

1,382,558. Specification of Application filed April 9,

Be; it known that I, ADAM F. Sonunnmn citizen of" the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Jacquard Mecha nisms, of which the following is a specification.

In utilizing Nottingham lace machines for the'manufacture of filet or squ'are'mesh lace it is customary at the present time to provide all the jacquard cards in duplicate for reasons which'will be understood by-those I skilled in this particular art.

'of'my invention therefore, 'is-to' provide a positive. simple'compact and easily applied device for adapting lace machines ofthe I above type for the manufacture of filet or One object 'squaremesh lace without necessitating the duplication of the cards, the arrangement 'of parts being such as to require a minimum 'of attention under operating conditions.

These objects and other advantageous ends 'I- attain as hereinafter set forth, reference beinghacl to the accompanying drawings in which,

' Figure 1' is a side elevation of the mechanism constituting my invention, 1llustrat-.

ing it as applied tocertain of the partsof a lace machine; and 1 Fig.2 isfan end elevation partly in section, further illustrating the invention.

Inthe above drawings 1 represents a',por-

tion' of the frame of a lace machine which includes a cylinder 2- of square cross section for supporting and. feeding of the jacquard cards andthis cylinder'at its ends is provided with axially projecting. trunnions or spindles 3 rotatably mounted 1T1 bearing members 4 carried on the ends of reciprocating rods 5 known as the cylinder pistons.

' The mechanism for"horizontallyreciprocating these pistons with the card cylinder, be-

ingwell known in this art, has been omitted from the drawings as it forms no part" of v the invention.

Projecting from one of the fiat ends of the "cylinder 2 adjacent the corners respectively, are "four pins 6 designedto bekengage'd'by either of two oppositely mounted claw'kers or 8 pivoted to the frame of the machine in the well known manner so as to be free to' "move into and out of positions in which r they will cooperate with said pins to turn the cylinder.

The upper clawker "7 has itsend'adj acent the cylinder 2 made in the form "of a hook with its extremity pointed for when in its lower position said end will drop back of one of the pins 6 of the cylinder when this has been moved byv the pistons 5 to the inner extremity ofits stroke, and will thereafter engage said pin as the pistons are moved outwardly to cause a quarter revolution of the cylinder.

In order to insure that the angle through which this turning occurs shall be exactly what is desired and for the purposeof'positionlng the cylinder after such turning, an arm 9 is fixed to the piston 5 by means of a set screw 10. This arm has pivoted to an elongated bar- 11 projecting substan tially parallel with the clawkers so as to rest upon that one of the planefa'ces of the cylinder which is'uppermost, theaction of this bar or hammer being such that its stops rotation of the cylinder in or brings it to,

V a definite position after each movement.

. The above noted parts are those coma formed with a lower inclined edge so that 1 cards to be made in duplicate, I provide 1 means whereby that one of the clawkers 7 or 8 which is operative to turn the cylinder is allowed to engage the pins 6 on alternate strokes only of the pistons 5. For this pur pose I mount on the frame 1 a stud l2 and rotatably support on the outerend of said stud a pair ofi'rigidly connected cams 13 and 14. The first of these, which I have designated as the star cam, is formed with four teeth or raised portions 15 and'i's held 'to the stud 12 by a nut 16. The second or ratchet cam 14 is annular in form and is rigidly fixed, by suitable means such as pins .or screws 14: to the first cam being made with double the number of ent instance eight. 7

Each of the clawkers has fixed to it in the vertical'plane including theaxisof the stud teeth, in the pres 12, a bracket 17 having a horizontally proo jecting pin or roller; 18 designed to cooperate with the cam 13, each of whose-teeth is ,soforr'ned as to include an inclined portion on one side which when it is turned acts on the pin or roller 18 tocause the clawker 7 to be moved on its pivot away from the cylinder '2 sufiiciently to prevent its hooks engaging the pinsdofth'e latter. The sece 0nd or ratchet cam 14 is provided with a holding pawl'iaha ing aste fi ted on by a spring 21 mounted in a recess of the the two cams in but one direction only.-

For causing such turning a second dog or pawl 23 is 'pivotally mounted on an arm 24:

fixed to and therefore movable with the hammer 11. This latter also carries a spring 25 having a free end which when desired,

may be engaged with a pin 25 onthe pawl 23 so as to raise this to a point at which its free end will not come into engagement with the ratchet cam'l l when the cylinder 5 and hammer 11 are reciprocated, Under conditions of use a series of jac- 3 quard cards extends around the cylinder 2 ous parts are in the positions shown in" in duplicate as would ordinarilybe required for inaking'square mesh lace. When the machine is in use the cylinder-carrying pistons 5' are constantly reciprocated but with'my mechanism the cylinder 2 is turned only on alternate strokes of said pistons;

This is due to the fact that when the vari-' Fig. 1, with the roller 18 of the clawker 7 resting upon the high part ofone of the teeth 15 of the star cam 1.3, the outward stroke of the cylinder pistons 5'with the hammer 11 causes the 1dog 23 to engage one of the teeth of the ratchet cam 14; and turn it through an angle of as or one-eighth of" a revolution. The resulting 15 rotation of the cam 13 thereuponmoves the high part 15 of one of its teeth out of en- .hook thereafter falls into-engagement with said pin so that on the next outward movement ofthe piston 5 with the cylinder 2, .the pin 6 is so held bythe hookof the of the ratchet cam 14, turning it with' the star cam 13 in such manner that the roller clawker 7 that said cylinder is causedlto make a quarter revolution and'thereby advance the chain of jacquard cards to the extent of one card. l V r 1 Immediately after such turning of the cylinder'2, the dog 28 engages another tooth or pin 18 of the clawker 7 rides up the incline of a second tooth of said latter cam and finally comes to rest at the top of the same in a position in which its hook cant not engage the pins 6 of the cylinder. Con-g 'sequently on the succeeding inward and outward movements of the pistons 5 and cyl-.

inder 2, the latter is not engaged by the hook of'the clawker and isthereforenotturned alth gh wing t h fact. that on said outward movement the dog 23 engages another one of the teeth of the'ratchet cam 14, it with the star cam 13 is so turned as to again permit the clawker to drop into 1 -posit1on to cooperate witha second pm of the cylinder 2 and give 1t another =move- It" for any reason it should be desired to l have the cylinder turned at every stroke of its pistons 5, the springi'25 fwould be en gaged with the pin 25 of the pawl or dog 23 so that'this latter would be held up toward the hammer 11 in such a position that its free end could'not engage the teeth-of in the well known manner-and each of these" cards may be difierentor least, not made the cylinder in the customary manner to' cause a quarter turn thereoton eachstroke of the pistons. The dog or holding pawl 19 facts to prevent accidental turning ot'jthe tioning under operating conditions and it is obvious that if it is desired to reverse the direction of rotation of the cylinder, the clawker 7 may be held by any suitable two cams'and to. insure their proper POSl-Q means such as a hook 7* in its upper or inoperative position while the clawker 8 is conneetedto cause its hook under the action of a spring 8, to engage the pins and intermittently turn the cylinder .2 as thepistons are reciprocated in'the' manner wellknownvto thoseskilled inthe 'art. It

sl oiild be noted that the form and'positioning of the star cam 13 on the stud 12' as Well as the positionoi the 'dog 23 on the hammer may be. varied without departing from my invention; since it is immaterial at what parttof the stroke of the piston 5 raise or releasej the clawker. 7 I

said pawl is caused to act on its cam. to

. ,1. In jacquardlmechanism for looms, the

combination. of a reciprocatingcylinder; a

v clawker; a cam forraising the clawk'er i into an inoperativeposition; a ratchetior said cam mounted with thelatter in posi tion' to directly'operate on the clawker; and apawl for intermittently turning the ratchet and cam to cause the clawker to operate oni- I the cylinder on alternate strokes only,'

2.1111 jacquard mechanismrfor looms, the V combination of a reciprocating card cylin- V der; a clawker; a projection on the clawker;

a cam mounted adjacent the clawker in po-' sition to operate on said'projection there of; a'ratchet'fixed to said cam; a dog for ,previentingrotation of" the ratchet in one directio n a reci rocating pa l opentive on the ratchet to cause the cam to al tern-ately move the clawker into and release it from an inoperative position.

3. In jacquard mechanism for looms, the combination of a reciprocating cylinder; a clawkerg a hammer; a toothed cam for raising the clawker into an inoperative position; a ratchet having twice as many teeth as said cam and fixed to the same; with a pawl mounted on the hammer in position to engage the ratchet at every stroke of the cylinder. v

4. In jacquard mechanism for looms, the combination of a frame; a piston; a reciprocating cylinder; a clawker; a hammer; a projection on the clawker; a toothed cam mounted on the frame under the clawker in position to cooperate with the projection thereof; a ratchet having double the number of teeth of the cam and fixed-thereto; a holding'dog on the frame operative to prevent rotation of the cam and ratchet in one direction; and a .pawl on the hammer placed to engage the ratchet at each reciprocation of the cylinder.

In witness whereof I aflix my signature.

ADAM F. SCHULER. 

